Q.

Which of the following are present in a dilute aqueous solution of hydrochloric acid?


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a

Unionised HCl 

b

H3O++ OH-

c

OH-+ Cl-        

d

H3O++ Cl-

answer is A.

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Detailed Solution

detailed_solution_thumbnail
H3O+ and Cl- are the ions present in a dilute aqueous solution of hydrochloric acid.
HCl or hydrochloric acid is a strong acid. A strong acid completely dissociates to its constituent ions upon addition of water.
HCl+H2 H3O++Cl- Therefore, (H3O++Cl-) are the ions present in dilute aqueous solution of hydrochloric acid.
 
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